ovirt_host_network: check for empty user_opts (#46695)

Signed-off-by: Ondra Machacek <omachace@redhat.com>

changelogs/fragments/ovirt_host_network_check_for_empty_user_opts.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+  - ovirt_host_network - check for empty user_opts (https://github.com/ansible/ansible/pull/47283).

lib/ansible/modules/cloud/ovirt/ovirt_host_network.py

@@ -221,6 +221,7 @@ def get_bond_options(mode, usr_opts):
     )
 
     opts_dict = DEFAULT_MODE_OPTS.get(mode, {})
+    if usr_opts is not None:
         opts_dict.update(**usr_opts)
 
     options.extend(